PHP XML Shopping Cart -

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hi i've got xml file products in shop. used php parse file , list products on page. next task add 'add cart' button list , simple shopping cart work.

honestly, i'm total newbie in php , have no idea start , how work. need basic overview of should learn , how i'm going solve problem. !!!

maybe started:

<?php $xml='<?xml version="1.0" encoding="iso-8859-1"?> <catalogue> <music>  <cd id="0010"> <name>album</name> <price>10</price> <quantity>100</quantity> </cd>  <cd id="0011"> <name>live ep</name> <price>10</price> <quantity>100</quantity> </cd>  <cd id="0012"> <name>single</name> <price>2</price> <quantity>100</quantity> </cd>  <cd id="0013"> <name>b-sides</name> <price>5</price> <quantity>100</quantity> </cd>  </music>  <merchandise> <shirt id="0001"> <name>album cover shirt</name> <price>9.99</price> <sizes> <size>small</size> <quantity>10</quantity> </sizes> <sizes> <size>medium</size> <quantity>10</quantity> </sizes> <sizes> <size>large</size> <quantity>10</quantity> </sizes> </shirt> </merchandise>  <merchandise>  <shirt id="0002"> <name>band logo shirt</name> <price>9.99</price> <sizes> <size>small</size> <quantity>10</quantity> </sizes> <sizes> <size>medium</size> <quantity>10</quantity> </sizes> <sizes> <size>large</size> <quantity>10</quantity> </sizes> </shirt> </merchandise>  <merchandise>  <shirt id="0003"> <name>guitar shirt</name> <price>9.99</price> <sizes> <size>small</size> <quantity>10</quantity> </sizes> <sizes> <size>medium</size> <quantity>10</quantity> </sizes> <sizes> <size>large</size> <quantity>10</quantity> </sizes>  </shirt> </merchandise>  <merchandise> <cap id="0004"> <name>band logo cap</name> <price>4.99</price> <quantity>20</quantity> </cap> </merchandise>  <merchandise>  <cap id="0005"> <name>album cover cap</name> <price>4.99</price> <quantity>20</quantity> </cap> </merchandise>  <merchandise> <cap id="0006"> <name>guitar cap</name> <price>4.99</price> <quantity>20</quantity> </cap> </merchandise>  <merchandise>  <others id="0007"> <name>band buttons</name> <price>4.99</price> <quantity>20</quantity> </others> </merchandise>  <merchandise>  <others id="0008"> <name>large poster</name> <price>10.99</price> <quantity>20</quantity> </others> </merchandise>v  <merchandise> <others id="0009"> <name>guitar</name> <description>very limited!</description> <price>300</price> <quantity>5</quantity> </others> </merchandise> <tickets>  <ticket id="0014"> <location>charles\'s pub</location> <city>sliema</city> <country>malta</country> <day>12</day> <month>6</month> <year>2013</year> <price>15</price> <quantity>200</quantity> </ticket>  <ticket id="0015"> <location>olympus</location> <city>valletta</city> <country>malta</country> <day>23</day> <month>6</month> <year>2013</year> <price>15</price> <quantity>200</quantity> </ticket>   <ticket id="0015"> <location>the venue</location> <city>rome</city> <country>italy</country> <day>5</day> <month>7</month> <year>2013</year> <price>15</price> <quantity>200</quantity> </ticket>  </tickets> </catalogue>';  $header='<!doctype html> <html>     <head>         <title>example shop</title>     </head>     <body>'; $footer='   </body> </html>';  $xml=simplexml_load_string($xml);  $store=array();  foreach($xml $section=>$items) {     $store[$section][]=$items; }  $sections=array_keys($store);  foreach ($sections $section) {     if (isset($_get[$section])) {         echo $header;         echo '<a href="'.$_server["script_name"].'">back index</a>';         foreach ($store[$section] $items) {             foreach ($items $type=>$item) {                 if ($section=="music") {                     echo "<h2>".$item->name."</h2>";                     echo "price: ".$item->price."<br>";                      $attr=$item->attributes();                     echo "id: ".$attr['id'];                 }                 if ($section=="merchandise") {                     echo "<h2>".$item->name."</h2>";                     echo "price: ".$item->price."<br>";                     if (isset($item->sizes)) {                         echo "<h3>sizes:</h3>";                         foreach ($item->sizes $size) {                             echo "<b>".$size->size."</b> quantity: ".$size->quantity."<br>";                         }                     }                     $attr=$item->attributes();                     echo "id: ".$attr['id'];                 }                 if ($section=="tickets") {                     echo "<h2>".$item->location."</h2>";                     echo "country: ".$item->country."<br>";                     echo "city: ".$item->city."<br>";                     echo "quantity: ".$item->quantity."<br>";                     echo "date: ".$item->month." ".$item->day.", ".$item->year."<br>";                     echo "price: ".$item->price."<br>";                              $attr=$item->attributes();                     echo "id: ".$attr['id'];                 }              }          }         ?>         <?php         echo $footer;         exit;     } } echo $header; ?> <h3>please select section begin.</h3> <?php foreach ($sections $section) {     echo '<a href="?'.$section.'">'.ucfirst($section).'</a><br>'; } echo $footer; ?>

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